ERROR CODE EXPLAINED
Thermador Dishwasher
Thermador Dishwasher E9001 Error Code
What it means
The household power supply to the dishwasher is too low.
Try this first
- Turn dishwasher power off for 30 seconds.
- Restore power.
- If the error returns, have the incoming voltage checked by a qualified electrician.
Can I keep using it?🔴 Low supply voltage
Repair usually required?🔴 Electrician may be required
If the error keeps returning
If the condition returns after troubleshooting, qualified service may be required.
Official source
Troubleshooting information verified against manufacturer support documentation.
View manufacturer support page →Safety note:ApplianceSignal provides general troubleshooting information. Always follow the appliance manufacturer's safety instructions and disconnect power when required.